Right flexbox with tag button in ff, how to solve?

there's a pretty big button, flexbox use to align items button
Problem: using the tag<a></a> for the button everything works as it should, but if you change the tag to
July 9th 19 at 10:51

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July 9th 19 at 10:53
Solution
https://bugzilla.mozilla.org/show_bug.cgi?id=984869
Mozila once again smarter than everyone else.
P. S. in the end, they reopened the ticket and maybe fixed this "feature".
As a workaround you can use <input type="button">

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